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Finding the Fourth Proportional to 10,987, 15,162.07 and 6,271.18

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Solution

The fourth proportional to 10,987, 15,162.07 and 6,271.18 is: 8,654.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987 : 15,162.07 = 6,271.18 : x
  2. Step 2: Convert to fraction form
    10,987/15,162.07 = 6,271.18/x
  3. Step 3: Cross multiply
    10,987x = 15,162.07 × 6,271.18
  4. Step 4: Simplify right side
    10,987x = 95,084,070.14
  5. Step 5: Solve for x
    x = 95,084,070.14/10,987
  6. Step 6: Final answer
    x = 8,654.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.